ZoneMinder install failing on ReadyNAS 516 - libjpeg8

Hi,

Using latest firmware and getting the following error when installing zoneminder by nastools:

Jun 23 07:57:38 NAS-516 fv-app-install[7614]: fv-app-install (nastools-zoneminder): error code [100]: Reading package lists...
Jun 23 07:57:38 NAS-516 fv-app-install[7614]: Building dependency tree...
Jun 23 07:57:38 NAS-516 fv-app-install[7614]: Reading state information...
Jun 23 07:57:38 NAS-516 fv-app-install[7614]: Some packages could not be installed. This may mean that you have
Jun 23 07:57:38 NAS-516 fv-app-install[7614]: requested an impossible situation or if you are using the unstable
Jun 23 07:57:38 NAS-516 fv-app-install[7614]: distribution that some required packages have not yet been created
Jun 23 07:57:38 NAS-516 fv-app-install[7614]: or been moved out of Incoming.
Jun 23 07:57:38 NAS-516 fv-app-install[7614]: The following information may help to resolve the situation:
Jun 23 07:57:38 NAS-516 fv-app-install[7614]: The following packages have unmet dependencies:
Jun 23 07:57:38 NAS-516 fv-app-install[7614]: nastools-zoneminder : Depends: libjpeg8 (>= 8c) but it is not going to be installed
Jun 23 07:57:38 NAS-516 fv-app-install[7614]: E: Unable to correct problems, you have held broken packages.

Any idea on how to fix this?

Thanks

Kevin